package com.heima.media.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.heima.common.dto.PageResponseResult;
import com.heima.common.dto.ResponseResult;
import com.heima.common.dto.User;
import com.heima.common.enums.AppHttpCodeEnum;
import com.heima.common.minio.MinIOService;
import com.heima.common.util.MediaThreadLocalUtil;
import com.heima.media.dto.WmMaterialDto;
import com.heima.media.entity.WmMaterial;
import com.heima.media.mapper.WmMaterialMapper;
import com.heima.media.service.IWmMaterialService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.support.ResourcePropertySource;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.util.Date;

/**
 * <p>
 * 自媒体图文素材信息表 服务实现类
 * </p>
 *
 * @author mcm
 * @since 2022-08-09
 */
@Service
public class WmMaterialServiceImpl extends ServiceImpl<WmMaterialMapper, WmMaterial> implements IWmMaterialService {

    @Autowired
    private MinIOService minIOService;

    //图片上传
    @Override
    public ResponseResult upload(MultipartFile file) {
        //从本地线程获取用户信息
        User user = MediaThreadLocalUtil.get();
        //如果用户为空，提示登录
        if (user == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        }

        //调用minio上传文件，获取上传的url地址
        String url = minIOService.upload(file);
        //构建素材对象
        WmMaterial material = new WmMaterial();
        material.setUserId(user.getUserId());
        material.setType(0);
        material.setUrl(url);
        material.setIsCollection(false);
        material.setCreatedTime(new Date());
        //保存素材对象
        this.save(material);
        return ResponseResult.okResult(material);
    }

    //分页查询
    @Override
    public ResponseResult listByCollection(WmMaterialDto dto) {
        //获取当前用户id
        User user = MediaThreadLocalUtil.get();
        if (user == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        }

        //创建查询条件
        LambdaQueryWrapper<WmMaterial> query = new LambdaQueryWrapper<>();
        //判断是否传入了收藏状态
        if (dto.getIsCollection() != null) {
            query.eq(WmMaterial::getIsCollection, dto.getIsCollection());
        }
        //当前用户只能查看自己的图片
        query.eq(WmMaterial::getUserId, user.getUserId());
        //对结果进行排序，根据时间倒序
        query.orderByDesc(WmMaterial::getCreatedTime);
        //创建分页条件
        IPage<WmMaterial> page = new Page(dto.getPage(), dto.getSize());
        //分页查询
        IPage<WmMaterial> iPage = this.page(page, query);
        //构造响应数据，并返回
        return new PageResponseResult(
                dto.getPage(),
                dto.getSize(),
                iPage.getTotal(),
                iPage.getRecords()
        );
    }
}
















